Mantle and support



Dec. 7, 1965 w. s. SEASE 3,221,523

MANTLE AND SUPPORT Filed Nov. 18, 1963 FIG. 4.

INVENTOR WILL S. SEASE FIG. 3. g j,

ATTORNEYS United States Patent 3,221,523 MANTLE AND SUPPORT Will S. Sease, Philadelphia, Pa, assignor to The Welsbach Corporation, Ihiladelphia, Pa, a corporation of Delaware Filed Nov. 18, 1963, Ser. No. 324,559 2 Claims. (Cl. 67-101) This invention relates to a mantle and a support for the mantle, the mantle being of the incandescent type for employment with a burner employing a liquid or gaseous fuel to produce incandescence. The mantle of this invention is of the upright type.

Incandescent mantles are well known to the art and are made following a number of different procedures, for example, by employing a knitted or woven fabric of, for example, ramie or rayon, impregnated with a solution of the nitrates of cerium and thorium, which are respectively converted to their oxides when the mantle is burned off. In any event, this aspect of incandescent mantles is well known to the art. However made, mantles are very fragile and therefore difficult to handle without damaging them.

In accordance with this invention, the mantle is supported in a manner such that it can readily be installed and removed without the necessity for disturbing the principal supporting structure. Heretofore, in order to install or remove a mantle, the mantle supporting structure had to be disconnected from its supporting base. The difiiculty of this operation frequently resulted in damage to the mantle, a problem which has been solved by this invention.

The invention is further advantageous in that it provides superior means for centering the mantle and a superior heat resistant mantle supporting ring.

The invention and its objects will be further clarified by a reading of the following description in conjunction with the drawings, in which:

FIGURE 1 is a front elevation of a mantle and holder in accordance with the invention;

FIGURE 2 is a side elevation, partially broken away, of the mantle and support of FIGURE 1;

FIGURE 3 is a side elevation, partially broken away, of the mantle and support of FIGURE 1 illustrating the manner in which the mantle is installed and removed;

FIGURE 4 is a front elevation of the supporting ring employed with the mantle and support of FIGURE 1; and

FIGURE 5 is a vertical section taken on the plane indicated by the lines 5-5 in FIGURE 4.

A tubular mantle 2 is secured to a supporting ring 4 provided with a peripheral groove 6 by means of a wire 8 which is stitched through the upper end of mantle 2 and pulled tight in order to pull mantle 2 into groove 6. The free ends of wire 8 are twisted together to secure them as indicated at 10. Wire 8 advantageously is a heat resistant material, such as, for example, a nickel manganese alloy and for superior heat resistance may be covered with asbestos. Ring 4 is made from a refractory material, for example, china clay, fire clay, alumina, silica or porcelain. A ceramic ring 4 is preferred.

Integral with ring 4 is a hook 12 having a loop portion 12a which is adapted to engage a downwardly extending loop portion 14 of a generally U-shaped Wire bracket 16. Loop portion 14 has parallel inner wall portions 14a and 14b spaced apart the width of hook 12. Similarly hook 12 has parallel inner wall portions 12b and 12c (FIGURE 5) spaced apart the width of the wire forming bracket 16. This structure keeps hook 12 aligned so that the center of ring 4 is maintained in the desired position. The wire used to form bracket 16 may be, for example, steel or a more heat resistant material such as, for example, a nickel manganese alloy if long life is desired. The lower ends 18, 18 of bracket 16 are mounted in socket forming members 20, 20 each of which are secured to a ring base 22 by means of ears 24, 24 which are bent inwardly through openings 26, 26 in base 22.

Ring base 22 and support ring 14 are coaxial. Base 22 carries at its upper open end a screen 28 and is in a form suitable for attachment to a conventional burner. The lower end of mantle 2 is telescoped over ring base 22.

Heretofore, mantles of this general type were supported in such a manner that the mantle could not be lifted clear of the base comparable to the ring base 22 without removing the wire frame 16. Indeed, the general practice was to secure the mantle to a frame similar to frame 16 by a loop so that it was not possible to remove the mantle from the wire frame without removing the wire frame. As indicated above, this necessitated manipulating the wire frame and the mantle at the same time with frequent resulting damage to the mantle. By employing a hook 12 with its loop portion 12a spaced a substantial distance above the upper end of mantle 2 and supporting ring 4, it is possible with the structure of the invention to raise mantle 2 an amount sufficient to permit the lower end of the mantle to clear base 22 and the hook 12 to clear wire frame 16 as illustrated in FIGURE 3 and then pull the mantle clear of base 22 and wire frame 16. By reversing this operation, a new mantle can be installed simply by manipulating the mantle and its associated supporting ring and hook without the necessity for manipulating wire frame 16.

What is claimed is:

1. A mantle and a mantle support for a burner comprising a supporting refractory ring having an integral upwardly extending hook portion opening downwardly, a mantle having its upper end secured to said supporting ring, a base ring the upper end of which is telescoped inside the lower end of the mantle, and an inverted U- shaped frame secured to said base ring and having an upper end extending substantially above the upper end of the mantle with a loop portion opening upwardly and centered on the axis of the mantle, said loop portion being engaged by said hook portion whereby the mantle and the hook can be raised clear of the base and frame respectively for the removal of the mantle without movement of the frame.

2. A mantle and support in accordance with claim 1 in which the hook tightly engages the frame and the loop portion of the frame tightly engages the hook to keep the supporting ring coaxial with the base ring.

References Cited by the Examiner UNITED STATES PATENTS 663,803 12/1900 Bluhm 67101 X 751,856 2/1904 Hughes 67-101 755,687 3/1904 Mygatt 67-101 797,691 8/ 1905 Kimmel 67-96 969,630 9/1910 Huston 67-101 990,753 4/1911 Langhans 67-101 1,052,860 2/1913 Storrs 67-101 2,175,316 10/1939 Rinnman 67-101 X FOREIGN PATENTS 16,239 1909 Great Britain.

FREDERICK L. MATTESON, JR., Primary Examiner. EDWARD 1. MICHAEL, Examiner.

M. L. BATES, Assistant Examiner. 

1. A MANTEL AND MANTLE SUPPORT FOR A BURNER COMPRISING A SUPPORTING REFRACTORY RING HAVING AN INTEGRAL UPWARDLY EXTENDING HOOK PORTION OPENING DOWNWARDLY, A MANTLE HAVING ITS UPPER END SECURED TO SAID SUPPORTING RING, A BASE RING THE UPPER END OF WHICH IT TELESCOPED INSIDE THE LOWER END OF THE MANTLE, AND AN INVERTED USHAPED FRAME SECURED TO SAID BASE RING AND HAVING AN UPPER END EXTENDING SUBSTANTIALLY ABOVE THE UPPER END OF THE MANTLE WITH A LOOP PORTION OPENING UPWARDLY AND 